7
7
UNIT
The
UNIT
key allows you to select
a unit of measurement. The
↑
and
↓
keys move through the choices.
Use the
↵
key to accept a choice,
or press
ON/ OFF
to return to
RUN
mode without making
changes.
MEM
The
MEMORY
key is used to
review stored data. When it is
pressed, the display will show the
current page number. The
↑
and
↓
keys will move you to any page
you wish to review. To examine
data, press the
↵
key.
If memory is empty, the unit
automatically jumps back to
RUN
mode. Otherwise, you can return
there by pressing the
ON/OFF
key.
(See also PAGES in “Data
Storage.”)
ZERO
The AXD 550 will zero the
instrument any time this key is
pushed. To get a proper zero, make
sure no pressure difference is
applied across the ports and no
kinks are in the hoses.
(See also “Zeroing the
Instrument.”)
Secondary Key Functions:
↑
and
↓
These keys allow you to move or
scroll through menu selections in
forward (
↑
) or reverse (
↓
) order.
AVE
If held for three (3) seconds, the
AVE
key lets you view the
average of the current page of
measurements which has been
stored. Pushing
ON/OFF
returns
you to
RUN
mode.
↵
This key accepts all selected
choices such as values and menu
items. After each entry, [
]
appears on the display as the AXD
550 stores new information.
Menu Selections
Pressing the
MENU
key activates the main menu.
Use the
↑
and
↓
keys to scroll through the
available selections. Once you find your desired
selection, choose it by pressing
↵.
Pressing
ON/OFF
exits the menu, returning you to
RUN
mode.
Menu items (to select any of the following
press
↵
):
Measurements stored in the
instrument’s memory are
organized into pages. This key
changes the page onto which you
are saving your measurements. If
there is no stored data on the
current page, the page number will
not increase. A total of 100 sets, or
lines, of data can be stored. You
may have 100 pages of one line
each, one page of 100 lines each,
or any combination of pages and
lines not exceeding 100 readings.
This copies all stored data to a
connected printer or computer.
You can abort the printout at any
time by pressing and holding the
ON/OFF
key.
The Correction Factor is an all-
purpose multiplying factor which
is applied when measuring
velocities or volumes. cF is set to
1.000 unless it is changed in the
menu. An annunciator (t) tells the
user when “cF=1.” cF is usually
used when air density conditions
deviate from standard. See
Appendix E.
Select values with the
↑
or
↓
key,
then press
↵
to accept them or
ON/OFF
to reject them.
